Detachable rim.



F. W, BAKER 8: J. S. FOLEY.

DET ACHABLE mm.

APPLICATION FILED JULY 24,19I6.

1 ,290,873. Patented Jan. 14, 1919.

UNITED STAT S PATENT OFFICE.

FREDERICK W. BAKER AND JAMES S. FOLEY, OF STOURBRIDGE, ENG-LAND.

DETACHABLE RIM.

Specification of Letters Patent.

Patented Jan. 14, 1919.

Application filed July 24, 1916. Serial No. 111,079.

To all whom it may concern:

Be it known that we, FREDERICK WILLIAM BAKER and JAMES SAMUEL FoLnY, subjects of the Kingdom of Great Britain, residing, respectively, at 59 Hagley road, Stourbridge, England, engineer, and 17 Beale street, Strmrbridge, aforesaid, engineer, have invented cert ain Improvements in or Relating to Detachable Rims, is a specification.

. This invention comprises certain improvements in or relating to detachable rims.

. According to the present invention the die-r tachable rim is coupled to the main rim or carrier part by means which when tightened tend to contract or draw inwardly the detachable rim, that is to say, the fastening elements between the detachable rim and the part are in effect operating in tension, this providing for a particularly effective couphn of the main and detach. ble members toget er.

Conveniently the connecting elements take the form of members furnished with book parts adapted to embrace the sides of the detachable rim; the parts having these hook formations extend radially inwardly and in the vicinity of the main rim or carrier part or a suitable portion thereof the fastening means are furnished with inclined surfaces adapted to cooperate with corresponding inclined surfaces provided upon or in connection with the main carrier part so that'when the fastening members are drawn together by suitable tightening means, that is in a direction transversely of the plane of the wheel, they are caused by virtue of the inclined surfaces to move radially inwardly, thcrebv effecting the desired inward efi'ort by which the detachable rim is retained.

in order that this invention may be clearly understood and readily carried into practicc, reference may be had to the append ed explanatory sheet of drawings, upon which Figure 1 is a transverse section of the rim of a wheel constructed according to the prescnt invention.

' Fig. 2 is a part side elevation of the rim shown in Fig. 1.

In a convenient embodiment of the present invention, as applied to, an ordinary standard rim, we provide within the Inner circular surface of the folly the two inclined of which the following,

surfaces' a, 6. These inclined surfaces a, b may be provided upon plates a suitably secured to the folly and provided at intervals around the circumference of the wheel. Fastoning members are side of the telly; these fastenin members each have outwardly a hook part, to engage with the side of the detachable rim'e and inwardly an inturned inclined tongue 7' conforming with the incline at the Inner sar face of the telly. U on these two fastening members, one on eac side, being drawn to- I g or the like, the through gether by a clamping bolt clamping bolt passing, for instance, perforations in the fastening means and an axially disposed perforation in the felly having a radial enlargement, the result is to collectively draw the two fastening members radially inwardly while the are being clamped toward each other, an the result is not only an efiective lateral clamping of the rim, but also an inwardly drawing effort upon the rim. To rovide'for this the hole or holes through which the bolt 9 passes disposed one on each may in either or both of the folly and has toning members be enlarged or elongated radially of the wheel, this enlargement "beingshown in the hole in the felly. h is a U-" shaped plate for rctainin the bolt normall in Its position.

flats or recesses 23, one on each side, and the" flattened portion is dis osed between the twov plate, which latter by the plate 0, and

The"

limbs of the U-shape is retained in position may also be secured by other means. plate It serves to prevent rotation of, and withdrawal of, the bolt g and by tightening the nut z" the desireddrawing together 0 the fastening members is efi'ected.

The bearing stress of the wheel is by this invention effectively taken by the connecting members when at the top of the wheel, these,

as previously stated, operating in tension.

The wheel rim is thus in suspension and a certain amount of elasticity is provided which is advantageous in the preservation of tires, and especially in preventing an undue stress on the telly with consequent splitting of felly. This results from the fact that the bolt is floating in the hole in the folly, due to the radial cnlargment of the hole.

The connecting members may tend to flattcu or indent very slightly the run at the The b0 t is formed wit points at which they operate; by this means creeping is effectively prevented; slight clearance may occur between the-parts of the main and detachable members thr0ughout the circumferential parts intermediate to the. connecting elements; this furthermore tends to obtain the desideratum of elasticity.

Any suitable mechanism may be provided for applying the radially inward effort to the detachable member, and any suitable locking means may be provided in connection'with such mechanism.

The inner surface of the detachable rim may be fiat and plain and the external surface of the felly which may be suitably banded as shown at 3' may likewise be flat and plain, these two surfaces being forced into intimate contact by the radially inwardly drawing means.

Nith the present invention the detachable rim does not have to be placed in any particular'way, in relation to the main rim; this is of advantage in the case oftwindetachable rims, as thetwin rim can be removed and replaced in reverse relationship so that if one tire receives more wear than another, the wear can be transferred to the other tire.

My invention has been shown as applied to a plain undivided hooked rim, but those skilled in the art will readily see that it may be applied to other forms of rims Without essential change.

bolt for drawing said clamping members 'ard each other, said bolt floating in the apertures in said felly, whereby saidiclamping members and said bolt move radially ea ers What We claim as our invention and desire to secure by Letters Patent is 1. The combination with a main wheel or carrier part of a detachable rim, fastening members hooked to said rinr and having wedging engagement with said wheel, and means for drawing the fastening members on either side of the rim toward each other, said members and said wedging means being free to move radially of the wheel as said members are drawn toward each other.

' 2. The combination with a. detachable rim of a main wheel or carrier part, said wheel having a standard telly. provided with radially elongated apertures therein,clamping members having hooked engagement, with said rim, a Wedge p ate on the inner face of saidfelly, said clamping members having wedging engagementwith. sald plate, anda as said clan'ipingmembers are drawn toxvard each other.

In W tness whereof \ve'bave hereunto set 0111 bands in tlle presciice of t\i'o \i'itiiesses. 

